Question

On a stationary sail-boat air is blown at the sails
from a fan attached to the boat. The boat will
1. Remains stationary
2. Spin around
3. Move in a direction opposite to that in which air is
blown
4. Motion in the direction in which the air is blown​

Answer 1

Answer:

1.Remains stationary

Explanation:

The boat will remain at rest as there is no external force acting on the boat. The air blown from the fan is a part of the boat. A force acts on the sail of the boat which is equal and opposite to reaction force acting on the fan.